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以蒙阴县地区晚熟桃树品种“大久保”为试材,研究15-5-20硝基肥配方中硝态氮含量对桃树生长、果实产量及品质的影响,以期探索出硝基肥中合适的硝态氮含量,并加快其在桃树种植区的大量推广。结果表明:与对照相比,各硝基肥处理不但均能显著促进桃树营养枝和结果枝春梢、夏梢及叶片生长,还能够提高叶片中叶绿素含量,硝基肥处理分别较普通复合肥增产13.49%、28.84%和20.00%;硝基肥处理提高了果实中可溶性固形物含量、可溶性糖含量以及还原性维生素C含量,从而改善了果实品质,但随着硝基肥中硝态氮含量的升高,果实有减产和品质下降趋势;以硝态氮含量为5%时效果最好。
Taking the perennial peach variety “Okubo ” in Mengyin county as test material, the effects of nitrate content in 15-5-20 Nitrogen fertilizer formula on peach growth, fruit yield and quality were studied in order to explore the effect of nitrate fertilizer Appropriate nitrate nitrogen content, and to speed up its extensive promotion in peach growing areas. The results showed that compared with the control, all the nitrification treatments could not only significantly promote the growth of shoots, shoots and leaves of vegetative branches and shoots of peach trees, but also increase the content of chlorophyll in the leaves, and increase the yield of nitrogenous fertilizer compared with common compound fertilizers 13.49%, 28.84% and 20.00% respectively. Nitrification increased the soluble solids content, soluble sugar content and reducing vitamin C content in fruit, thus improving the fruit quality. However, with the increase of nitrate content in nitrate fertilizer, , Fruit yield and quality decline; the best results when the nitrate content of 5%.